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Old 06-12-2017
CaptainChaos CaptainChaos is offline
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Default Front One-Way

It seems that none of the current 4WD 1/10 cars have a front one-way any longer and are all full-time 4WD...

Is this the case and why has it gone that way??

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Old 06-12-2017
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Cas have enough grip / steering not to need them now - plus the added stability from a diff is great.
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Old 06-12-2017
CaptainChaos CaptainChaos is offline
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So none come with an option for a one-way at all?

I hear what you're saying, but I tried a BMAX4 a few years back and the thing was an understeery pig that wouldn't turn in... I know Tom Yardy managed to get his round at the usual warp speed, but it didn't suit my driving style at all
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Old 06-12-2017
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Nope - they are not produced anymore. Geared differentials are the preferred route to go.

The bmax 4 is also a good few generations old. The latest models are alot more refined and effective.
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Old 06-12-2017
CaptainChaos CaptainChaos is offline
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Why go back to gear diffs?

The ball diff was a HUGE leap forward...
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Old 06-12-2017
/tobys /tobys is offline
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Quote:
Originally Posted by CaptainChaos View Post
Why go back to gear diffs?

The ball diff was a HUGE leap forward...
The combination of high grip and high power means that ball diffs tend to go crunchy very quickly. So gear diffs tend to last longer between rebuild and easier to set consistently.

Plus gear diffs seems to “drive” differently and this seems to suit current race surfaces, buggy layouts/setups and the generally more aggressive driving styles that are in use these days.

When I started racing again, the first few 4wd buggies I had were equipped with ball diffs and the constant maintenance was a pain (I even had to make rebuilds track side on occasions). I experienced my first gear diffs with a Durango and since then every 4wd of mine has had geardiffs. I prefer the way they drive and I don’t need to use the slipper as a diff protector any more either!

In 2wd, ball diffs are more common but even then, a gear diff can be a very useful thing to have if you run on carpet or very grippy Astro.
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Old 06-12-2017
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The Schumacher Cat K2 has an option for a FAB, front adjustable brake which will do a similar thing I believe, allows front wheels to continue to roll when brakes applied giving better turn in. ??
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Old 06-12-2017
CaptainChaos CaptainChaos is offline
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That's interesting information

I'll go download a manual and have a look, thanks!


Why have ball diffs gone again?
Tamiya Hornets had those in the 80s and then everything got better when Schumacher invented the ball diff...
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Old 06-12-2017
CaptainChaos CaptainChaos is offline
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Jut downloaded the CAT manual and both belt seem to slide onto the same gear on the layshaft


Correction:
OK, you're right, it's an option part :-)
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Old 06-12-2017
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Im the same, i can gain more laps with a oneway compared to permanent 4wd so stopped doing 4wd until i figure out how to fit one on my car and now sticking to 2 until then. A one way with a ball or gear diff is quicker in and out of corners for me.
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Old 06-12-2017
CaptainChaos CaptainChaos is offline
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Judging by your list of cars Welshy, I'd say we have the same issue because we grew up racing the same stuff

I might just have to build something retro and put lipos and brushless in it

Is there much difference with C ratings on lipos? I get the impression a lot of the power from high ratings and faster motors etc has to be turned down in the name of traction anyway?? For example, do 100C lipos have to be turned down, so why bother buying more than 35C?
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